Sebastien B. answered 09/01/22
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To find the price reduction in $, subtract the final price from the initial price:
178$-128$=50$
To find the equivalent % reduction:
178$ is 100% of the original price
50$ is the markdown
So dividing the markdown by the original item value yields the % as shown:
50/178=0.28=28%
The discount is approximately 28% of the original price of the phone

Peter R.
09/01/22